Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Slice the carrots into 1/2-inch thick rounds and cut the chicken breast into bite-sized cubes.
In a large mixing bowl, whisk together the olive oil, maple syrup, sea salt, black pepper, and garlic powder.
Add the carrots and chicken to the bowl, tossing thoroughly until every piece is evenly coated in the maple mixture.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces are not overcrowded to allow for proper browning.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the carrots are tender with caramelized edges.
Remove from the oven and garnish with fresh thyme leaves before serving warm.